Login information at the top of every page

I wish to change the styles so that I can place textual information about the person's account in the header of the style for every single page/feature you access.

As an example, if you click on Addon Domains, nowhere in that page does it tell you what account you are logged in as. I sometimes have to log in and out of several accounts to alter their information but there is no way to keep track of who I am logged in as.

Would also like the ability to edit the pages so they are 1024 pixels wide instead of 800.

I have briefly perused your documentation and the styles editing menu under the WHM, I have no problems creating my own style with all the features I want and just not worry about the rest. So I am mainly after a list of control codes that can be used to display various information. Where is the documentation for those codes?